Journal-box brass.



J. M. ROI-ILFING.

JOURNAL BOX BRASS.

APPLICATION FILED AUG. 2, 1909.

Patented June 21, 1910.

JOHN m. nonnrme, on ST. LOUIS, .missounr, assrenon or ONE-HALF 'ro ROBERT E.

runs, on ST. LO I mssoum.

JoUnnAL-Box amass.-

. spe mm mm rmnt Yamaha 21,1910.

Application filed August 2, 1909f Serial No. 510,782. i

To all whom it may camera:

Be it known thatI, JOHN M. ROHLFING, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement inJournal-Box Brasses, of which the following is afull clear, and exact description, such as wili enable others skilled in the art to" which it appertains to make and use the same.

This invention relates to journal bearings, and particularly to journal bearings of that type which consist of a cast metal ody portion provided with a filling of alloy.

One object of my invention is to provide a journal bearing of the type referred to that will conform to the requirements of the M. C. B. Association and which is provided with a bearing surface that consists partly of an alloy or inexpensive metal and partly of a harder or tougher metal than said alloy arranged in a novel manner.

Anotherobject is to provide a journal bearing which is so constructed that the lubricatingmedium will be distributed uniformly over that surface of the bearing which engages the journal or shaft on whic the bearing is mounted.

Another object is to provide a journal bearing of the type referred to which is so designed that no cores have to be used in the operation of casting the shell or body portion of the bearing. And still another object is to provide a journal bearing of the type referred to that is light, strong and inexpensive to manufacture.

Figure 1 is a top plan View of a journal bearing constructed in accordance with my invention; Fig. 2 is a vertical longitudinal sectional view of same taken on lines 2-2 of Fig. lyFig. 3 is a bottom plan view of the bearing; and Figs. 4 and 5 are cross sectional views taken, respectively, on the lines 4-4= and 5-5 of Fig. 1.

Referring to the drawin s which illus-' tra-te the preferred form 0 my invention, A designates the shell or body portion of the bearing which is made of cast metal, preferabl brass, and'l designates a plurality of ri s or webs that extend continuously from one wall of the shell to the other wall so as to tie said walls together and thus produce a strong and rigid body portion of substantially skeleton construction. These ribsl are preferably inclined longitudinally of the bearing, and the spaces between same are ,filled with an alloy B which is poured into said spaces while in a molten state,

alternately arranged strips or pieces of al- 10y and brass that extend continuously from one side wall of the bearing to the other side wall. The under surface or bearing face of the hearing which rests upon the journal or axle on which the bearing is used, is of concave shape so as to partially surround the journal and the exterior shape ofthe hearing conforms to the requirements, of the M. C. B. Association. v

To overcome the possibility of the alloy dropping out of the shell or body portion of the hearing I prefer to form openings or cut-out portions in the shell A so that the alloy can flow into said openings and thus form anchorage members or portions that tie the shell and the filling ofsame together.

In the construction herem shown, the top wall and also the side walls of the shell are provided with openings that are filled by portions 2 of the alloy, the portions which fill the openings in' the top wall of the shell extending across the ribs 1, as shown in Fig. 2, so asto positively prevent the alloy from dropping out of the shell. even if it should work loose from the ribs 1 and other portions of the shell with which it contacts. I do not wish it to be understood, however,

that my broad idea is limited to the specific ribs 1 are made comparatively thin sothat .a greater quantity of alloy can be used in the construction of the bearing and thus reduce the cost of manufacture. The ribs 1 are preferably made tapered or wedgeshaped in cross section so as to facilitate drawing the pattern that is used to form the im ression of the shell in the sand mold, an this slight taper in the ribs 1 also produces wed e-shaped spaces between the ribs which tend to strengthen the bond between the alloy and shell owing to the fact that the alloy is forced more tightly into said spaces whenever it is subjected to pressure.

While I have herein shown my invention embodied in a one-piece bearing it will of course, be obvious that the bearing could be formed in two ieces; namely, a backin made of malleab e iron or some other suitable metal and a facing piece made of an alloy and a relatively harder metal, as herein shown and described.

One of the chief advantages of myv improved journal bearing is that the surface of same, which rests upon a journal or axle, is composed of an alloy and a comparatively harder material, such, for example, as brass.

A journal bearing of this construction will wear much longer than one in which the beanng face consists entirely of an alloy,

and as the shell is comparatively thin a" large proportion of the bearing can be made of alloy, thus reducing the cost of manufacturing same. Another advantage of my construction is that the inclined parallel ribs wall so that they tend .to distribute the lu- The shell A is so designed that bricating medium uniformly over said bearing surface and also cause foreign substances which collect on said bearing work toward one end or the 0th ribs cross or intersect, and a filling of alloy arranged between saidribs and extending over the ribs that extend across the openings opening in the shell, and an mner lining for said shell consisting of an alloy that fills the spaces between said ribs and also extends up into said opening and across the ribs that intersect the same.

3. A journal bearing consisting of an outer shell provided with recesses or openings, parallel ribs on the inner face-of said shell that extend dia onally across the face thereof, some of-sai ribs extending across the openings orrecesses in the shell, and an alloy fillin the spaces between said ribs and also exten ing over the ribs that intersect the recesses or o enings in the shell.

4. A journal caring consisting of a cast metal shell having top and side walls in which openings are formed, a plurality of diagonally arranged ribs that extend continuously across the under side of the bearing, said ribs extending arallel to each other and some of said r1 s being so arranged that they intersect some of said openings, and an alloy filling the spaces between said ribs and also the openings in said shell which the ribs intersect, thereby producing a structure in which the alloy 1s supported directly by the ribs.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses, this thirtieth day of July 1909.

JOHN M. ROHLFING. I

Witnesses: WrtLs L. CHURCH, Gnoxcr. BAKEWELL. 

